Root Cause Analysis

weblogic.application.ModuleException

Exception preparing module: EJBModule(MeCKSServerEJB3.jar)
Unable to deploy EJB: AddSeriesBean from MeCKSServerEJB3.jar:
No persistence unit named 'MeCKSPersistenceUnit' is available in scope MeCKSServerEJB3.jar. Available persistence units: []